baber/WOPTO huggingface dataset:
Patent GB-225192-A (GB)
Title: Improvements relating to the storing of dissolved acetylene or other gas
IPC: C10L3/04
Filed: 1924-10-25
Abstract: Dissolved acetylene cylinders are charged with a porous granular absorbent material prepared from sawdust by first sieving to separate larger particles and dust, and then treating with soda, bisulphite, &c. solutions as in paper-pulp manufacture.  The granules are finally centrifuged and dried.ALSO:Gases, such as acetylene, are absorbed in a porous granular material prepared from sawdust by first sieving to separate larger particles and dust, and then treating with soda, bisulphite, &c. solutions as in paper-pulp manufacture.  The granules are finally centrifuged and dried.
Patent GB-587219-A (GB)
Title: An improvement in or relating to drawing boxes and like machines for preparing textile fibres
IPC: D01H13/16
Filed: 1944-12-22
Abstract: 587,219. Spinning-machines. FIELD, R. Dec. 22, 1944, No. 25740. [Class 120 (ii)] A drawing box or like machine is provided with means for stopping the machine on end breakage. Each end a supports a hinged detector plate b which, when the end breaks, falls and closes an electric circuit, thereby energising an electro-magnet m and causing a pin j to project into the bore of tube e attached to the stop rod. A constantly reciprocating plunger f engages the pin j and displaces the stop rod. The machine may deal with one or more ends. In the latter case, a further detector may be arranged in connection with the doubled end at n. To conserve current, a circuit cut-out may be arranged to act when the machine has stopped. The detectors may be of finger or ring form, and may be pivoted or slidable.
Patent GB-829155-A (GB)
Title: Electronic slub indicator
IPC: B65H63/06
Filed: 1957-08-15
Abstract: 829,155. Testing yarns &c. PHRIXWERKE A. G. Aug. 15, 1957 [Aug. 16, 1956; April 20, 1957; July 8, 1957], No. 25823/57. Class 120(3) [Also in Group XL(b)]  Slubs on a thread moving in close proximity to an aperture stop, through which light is directed to a photo cell, cause variations in the intensity of the light beam to produce signals from the cell which operate an electronic counting device. Light from the source 15, Fig. 1, passes through the aperture stop 16 to fall on the barrier type photo cell 20. A thread 19 guided by the pins 17 and 18 moves along a line forming a tangent to the aperture, the tension on the thread produced by passing over the pins causes the thread to twist and position each slub so that it partially obscures the aperture, decreasing the light falling on the cell. The momentary increase in cell resistance, in conjunction with the positive voltage supply 104, Fig. 3, connected to the cell via the resistance 26, produces a positive pulse at the grid A of the thyratron valve 31 which fires discharging the condenser 33 through the counting device 32. Power is supplied at points 101 to 106, the supply to points 104 and 106 being stabilized. In a further arrangement, Fig. 5 (not shown), the thyratron is replaced by a cold cathode relay tube.
Patent GB-258568-A (GB)
Abstract: 258,568. Atlantic Precision Co., (Assignees of Allen, A.). Sept. 17, 1925, [Convention date]. Capacities, measuring. - In a method of measuring the amount of material taken up by a web in coating &c. operations, the weight of the web is measured by the capacity of a condenser consisting of two spaced plates between which the web is passed. To indicate the capacity changes, the condensers are included in two oscillatory circuits which are tuned to resonance. The web w is passed between two plates 1, 2, through the treating apparatus, for example, a bath 5, and then between two plates 15, 16. The oscillatory circuit A comprises a thermionic valve 20 the plate circuit of which is tuned by an inductance 23 and a variable condenser 24. A coil 25 is inductively coupled to the coil 23 and connected through a grid leak 26 to the grid 27 of the valve. The plates 1, 2 are shunted across the .condenser 24 and constitute a capacity which varies with the weight of the treated web. The whole circuit may be enclosed in an earthed shield 30. Extending from the shield is a loop 31 with which the receiving circuit B is loosely coupled. The circuit B comprises a coil 32 in circuit with which are two variable condensers 33, 34 in parallel with each other and with the plates 15, 16. Coupled to the circuit by a transformer is a thermo-galvanometer 40 or other current indicating instrument. The circuit A is tuned to a suitable frequency, and the circuit B is tuned to resonance as indicated by the maximum current flow in the instrument 40. Any change in the capacity of the condenser 15, 16 owing to variation of the weight of the treated web will throw the circuit B out of resonance with the circuit A, but resonance may be restorer! by adjustment of the condensers 33, 34. The amount of adjustment measures the change of capacity of the plates 15, 16 due to change of mass of the treated web. Possible variation of capacity due to change of weight of the web itself is eliminated by the passing of the web between the plates 1, 2, so that the adjustments of the condensers 33, 34 measure only the variation of the weight of the treating material taken up. Instead of adjusting the condensers 33, 34 to bring the circuits into resonance, the circuit B may be maintained slightly out of resonance, and the changes of current value become a direct indication of the changes in capacity due to the treating material taken up. The instrument 40 may be calibrated to show directly the running weight of material taken up. Measurements may be taken with the web stationary between the plates. Specification 276,469 is referred to.
Patent GB-994749-A (GB)
Title: 19-oxygenated and 19-nor-steroids and process for their manufacture
IPC: C07J9/00
Filed: 1961-07-17
Abstract: The invention comprises (1) a process for the preparation of D 4-3-oxo-steroids containing a 10-CH2OH or an ester or ether thereof, a 10-CHO or a 10-COOH group wherein a D 4 - 3 - oxo - 6b ,19 - oxido - steroid or a corresponding 19,6b -hemiacetal or 19,6b -lactone of a 6b -hydroxy-steroid 19-al or 19-acid is treated with a reducing agent and any resulting D 5-3-oxo-steroid is isomerized with an acidic or basic agent to the corresponding D 4-3-oxo-steroid and, if desired, any hydroxy compound obtained is esterified, etherified and/or oxidized with a derivative of hexavalent chromium and/or any ester obtained is hydrolysed; (2) D 5-3-oxo-19-nor-steroids of the androstane or pregnane series containing in the 10-position a free, esterified or etherified hydroxymethyl group, a formyl, a carboxyl or a carbomethoxy group; (3) D 4 - 3 - oxo - 17a  - ethynyl - 17b -hydroxy - 19 - nor - androstenes containing a 10-formyl, -carboxyl or -carbomethoxy group; (4) D 4 - 3,20 - dioxo - 17a  - acetoxy - 19 - nor-pregnenes containing a 10-formyl, -carboxy or -carbomethoxy group; (5) D 4 - 3,20 - dioxo-pregnene-19-acid and its methyl ester; (6) D 4 - 3 - oxo - 19 - nor - androstenes containing a 10-hydroxymethyl, -acetoxymethyl, -formyl, -carboxyl or -carbomethoxy group and a 17b -acyloxy group derived from a carboxylic acid of 4 to 15 carbon atoms; and (7) D 5(10)-3-oxo-17b  - (b  - phenylpropionyloxy) - 19 - nor-androstene. The starting materials for process (1) may belong to the spirostane, androstane, pregnane, cholane, cholestane, stigmastane or cardanolide series and may contain free, ketalized or enolized oxo groups, esterified or etherified hydroxyl groups, alkyl groups or halogen atoms in one or positions of the steroid nucleus or the 17-side chain.  They may also contain double bonds or oxido groups.  In process (1) isomerization may accompany reduction if, for example, the reducing agent is zinc in a carboxylic anhydride. The products are 19 - hydroxy - steroids, steroid - 19-aldehydes or steroid-19-acids, prepared, respectively from 6b ,19-oxido-steroids, 19,6b -hemiacetals and 19,6b -lactones, and the 19-ols may be oxidized to the aldehydes and then the acids, or they may be etherified or they or the acids esterified. 17-Keto products may be converted to 17b  - hydroxy - 17a  - alkyl or alkyryl compounds.  The D 4-3-oxo-19-aldehydes and 19-acids may be converted to 19-nor compounds, and if this is effected by heating in pyridine the products are predominantly D 5(10)-3-oxo-19-nor compounds which with acids yield D 4-3-oxo-19-nor-steroids.  Detailed examples of all the above processes are provided.  D 3,5 - 3 - ethoxy - 19 - acetoxy - 17 - oxoandrostadiene is prepared from the D 4-3-one and ethyl orthoformate.  D 4 - 3 - oxo - 6b ,19 - oxido - 17b  - decanoyloxy and b  - phenyl - propionyloxy - androstenes are prepared by esterification of the 17b -ols.  Specifications 994,746, 994,748 and 994,750 are referred to.
Patent GB-771696-A (GB)
Title: Improvements relating to electrical pulse generators
Inventor: DODDS JOHN MATHIESON
IPC: H03K3/53
Filed: 1954-09-07
Abstract: 771,696. Pulse generating circuits. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Aug. 24, 1955 [Sept. 7, 1954], No. 25931/54. Class 40(6) In a pulse generator a pulse forming network is connected in series with a load and a reservoir capacitance alternately in opposite directions so that at each switching the network is charged from the reservoir circuit and a pulse is produced at the load. The Figure shows a high voltage pulse generator in which reservoir capacitance C1 is charged from a D.C. voltage source and in which switches S1-S4 which are thyratrons or spark gaps are arranged in the arms of a bridge network with the pulse forming network DL and the circuit comprising capacitor C1 in series with load RL connected respectively across opposite corners of the bridge. When switches Sl, S4 are closed and S2, S3 opened network DL is charged with its left-hand side positive. When S1, S4 are opened and S2, S3 closed, network DL is rapidly re-charged from C1 with a reversed polarity and a pulse is generated across load RL. If S2, S3 are now opened and S1, S4 closed a further pulse is produced across load RL. Thus by operating the switches in pairs in this way a train of pulses, always of the same polarity is produced across load RL and the possibility of "firing-through" is greatly reduced. In a modification, Fig. 2 (not shown) the load RL is connected in series with capacitor C1 directly across the D.C. charging supply.
Patent GB-233247-A (GB)
Title: Improved process for utilising metalliferous refuse
IPC: C22B7/00
Filed: 1924-10-30
Abstract: Metalliferous waste in the form of dust, sand, or sludge, for example brass ashes or slags, is leached with an agent, such as ammonia, which will free it from oxide, and the residue is then subjected to wet mechanical dressing for the recovery of the particles of free metal.  The solution obtained by the leaching may be treated for the recovery of the metal contents, and ammonia may be recovered by distillation.  Specification 5390/82 is referred to.ALSO:Metalliferous waste in the form of dust, sand, or sludge, for example brass ashes or slags, is leached with an agent, such as dilute hydrochloric acid, which will free it from oxide.  The solution obtained by the leaching may be treated for the recovery of the metal contents.  Specification 5390/82 is referred to.
Patent GB-309051-A (GB)
Title: Improvements relating to the manufacture of titanium containing compounds
IPC: C09C1/00
Filed: 1927-10-01
Abstract: 309,051. Stephens, F. G. C., Andersost, L. J., and Cash, W. A. Oct. 1, 1927. Pigments.-Titanium salt solutions are liydrolyzed by adding the hot or cold salt solution to warm or boiling water to which has previously been added a colloid other than colloidal titanium oxide, for instance silicic acid. Solutions from which ferrous sulphate has, if necessary, been removed by crystallisation and containing about 5 per cent of titanous salts are preferably employed. To obtain composite pigments the solution may have an insoluble alkaline earth sulphate such as barium sulphate suspended therein; or a soluble barium salt solution may be added to a solution of titanium sulphate; or to a hydrolyzed solution of titanium sulphate, in which the titanium dioxide remains suspended, a solution of an alkaline earth salt may be added; or a sulphate solution of for instance sodium sulphate may be added and then one of an alkaline earth chloride; or the titanium dioxide obtained may be washed free from iron, mixed with an alkaline earth sulphate, neutralized, and calcined with or without the addition of a borate. In the last case the admixture of an alkaline earth sulphate may be omitted to obtain a pigment consisting substantially of titanium dioxide.
Patent GB-1048253-A (GB)
Title: Apparatus for separating liquids or solids from liquids
Inventor: CALDWELL THOMAS
IPC: E03F3/04
Filed: 1962-07-07
Abstract: 1,048,253. Gravity-separation apparatus. SMITH FULLERTON Ltd. June 28, 1963 [July 7, 1962], No. 26128/62. Heading B1D. Mixture introduced at 19 deposits some solids in compartment 8; the remaining mixture flows over a baffle 3 at 6 into an open-ended box 1 having sets of fins 16, 18, extending the full width of the tank 2. Some solids collect between fins 16 and rear wall 15 whilst lighter solids collect between the undersides of fins 18 and wall 17. The process is repeated in compartments 10 and 11. Liquid is removed at 20 by pump 21. The boxes, which rest by lugs 13 on the baffles, may be removed for cleaning. A foam restraining baffle 26 may be provided. A collapsible bag may be provided on the floor of compartment 8 for collection and removal of heavy particles. Liquid/liquid mixtures may be separated similarly.
Patent GB-843112-A (GB)
Title: Shut-off means for reservoirs for liquids and gases
IPC: F16K1/10
Filed: 1956-08-27
Abstract: 843,112. Valves. BUSS A.G. Aug. 27, 1956 [Aug. 29, 1955], No. 26176/56. Class 135. A shut-off device for gas and liquid reservoirs comprises a main shut-off valve x arranged outside the reservoir and a supplementary shut-off valve arranged at the inner end of a pipe section b, built into the reservoir wall a. The supplementary valve is in the form of a poppet valve e, the stem f of which is operable manually from outside the reservoir through a releasable coupling n. The pipe section b is fitted with a combined valve stem guide and valve seat insert d and a threaded guide g for the outer end of the valve stem, and a hand wheel m, that is mounted on a spindle i which passes through a stuffing-box guide j and a threaded spindle guide k formed in a yoke on an elbow h connected to pipe b and engages the coupling n, is used to operate the supplementary valve.
Patent GB-998393-A (GB)
Title: Shaft seal assemblies
Inventor: KEMISH PERCY CHARLES
IPC: F16J15/20
Filed: 1963-07-02
Abstract: 998,393. Seals. BRITISH SIDDELEY ENGINES Ltd. June 26, 1964 [July 2, 1963], No. 26204/63. Heading F2B. A shaft seal assembly comprises relatively rotatable shaft and casing members and a sealing element carried by one of the members and having a part made of rubber or other elastomeric material bearing upon the other member in sliding relation thereto, at least a surface layer of the other member being entirely, or almost entirely, of silver, gold, copper or alloys of two or all of these metals together. The material of the surface layer may include non-metallic substances or compounds, e.g. graphite or molybdenum disulphide, to improve lubrication and may include other metals as impurities. When using a seal having a lip composed of nitrile rubber, the surface layer may consist of an electroplated deposit of silver having a width of 0.25 inch and a thickness of 0.0003 to 0.0006 inch.
Patent GB-1003230-A (GB)
Title: Process for the isomerisation of olefins
IPC: C07C5/25
Filed: 1962-07-09
Abstract: The isomerization of olefins to transfer the double bond to a more central position is effected in two stages, the first at 140-180 DEG C. and the second at 60-100 DEG  C., in each stage using a catalyst comprising supported nickel which, under the operating conditions, is present in major proportion as the element and which has been modified by treatment with sulphur, hydrogen sulphide, carbon disulphide and/or an organic sulphur compound to convert a minor proportion of the nickel to sulphide; such catalysts are described in Specification 1,002,394. The second of the two stages may be carried out by recycling over the same bed, passing over a second bed or by having a single bed with a temperature gradient.  Space velocities of 0.1-20 vol./vol./hr. may be used and hydrogen may be present. 2-Methylpentene-2 is obtained from 4- and/or 2-methylpentene-1 and/or 4-methyl-pentene-2.
Patent GB-359636-A (GB)
Title: Improvements in charge-mixing and diluting devices for internal combustion engines
IPC: F02M1/00
Filed: 1930-09-03
Abstract: 359,636. Mixing and diluting charge. GIBSON, G. M., 31, Hymer's Avenue, Hull. Sept. 3, 1930, No. 26247. [Class 7 (ii).] A fine-mesh sieve A is inserted at an angle, or in a slightly curved formation, in an enlarged chamber C arranged between the carburetter B and induction pipe D. Unvaporized fuel collects at the point E, where an extra-air valve is fitted. An inspection opening is fitted with a cover F which secures the sieve A.
Patent GB-788876-A (GB)
Title: Detachable electrical connections
IPC: H01R4/52
Filed: 1955-09-15
Abstract: 788,876. Two-part couplings. BENDIX AVIATION CORPORATION. Sept. 15, 1955 [Sept. 23, 1954; June 24, 1955], No. 26465/55. Class 38 (1). In a detachable connection between conductors 14, 26 enclosed in conduits 17, 19, the former in the example shown being part of a sparking plug, a tubular insulator 29 surrounding the end of conductor 26 is pressed into sealing engagement  with an insulator 12 in conduit 17 by means of a spring 41 acting through a sleeve 37 on a flange 32 on insulator 29, the spring being compressed by the action of coupling the conduits by a nut 18. The inner end of sleeve 37 has circumferentially extending ears 39 pressed out therefrom or secured thereto which, when conduit 19 is detached, engage a flange 24 in ferrule 21 as the spring 41 expands and thus retain the spring in a partially compressed condition. Ears 39 may be replaced by longitudinally-extending punched-out sections of the sleeve wall, Fig. 3 (not shown), or a flange, or a ring 44, Fig. 6, engaged in a groove in sleeve 37. Although the ring can pass flange 24 its spacing from the other end of the sleeve is such that in the detached condition of the connection it is engaged by spring 41 before the latter has fully expanded. Reference has been directed by the Comptroller to Specification 752,259.
Patent GB-720388-A (GB)
Title: Process for improving hydrocarbon fractions for the production of knock-stable gasolines
IPC: C10L1/06
Filed: 1952-10-22
Abstract: A process for improving a hydrocarbon fraction consisting essentially of hydrocarbons boiling between 85 DEG  and 200 DEG  C. for the production of knock-stable gasoline by isomerization and dehydrogenation of the fraction, using a catalyst containing platinum or palladium is characterized in that n-pentane is added to the fraction to be treated in such a quantity that the resulting blend contains 20 to 50 per cent by weight of n-pentane. The mixture of n-pentane and hydrocarbon fraction may be conducted in the presence of hydrogen over a catalyst consisting of platinum or palladium or a compound of such a metal deposited on an acid-carrier, e.g. silica, alumina-silica or alumina containing halogen, at temperatures between about 400 DEG  and 525 DEG  C. and under pressures of between about 10-60 atmospheres.  A number of reactors may be employed with reheating of the reaction mixture prior to its passage into each reactor.  The unconverted n-pentane may be separated from the product and recycled to the process. The product may be used as a motor fuel or for blending with other fuels; fractions or mixtures of fractions may be used as fuel additives, such as the isopentane and C6, C7 and C8 fractions.  In an example, a blend of 35 per cent n-pentane and 65 per cent of a gasoline fraction B.P. 85-130 DEG  C. containing C7 and C8 naphthenes, paraffins and 3 per cent aromatics is treated in presence of hydrogen at 430 DEG  C. and 30 atmos. pressure over a platinum containing platform catalyst and the product is distilled yielding a fraction of pentane and isopentane and a residual fraction of aromatic content 55 per cent.
Patent GB-1454970-A (GB)
Title: Connector arrangement for optical fibre cables
IPC: G02B6/38
Filed: 1974-06-14
Abstract: 1454970 Light guides SIEMENS AG 14 June 1974 [5 July 1973] 26582/74 Heading G2J A connector arrangement for connecting together, in pairs, the fibres of two optical fibre cables comprises a housing 4, 8, a holder (not shown) in the housing for holding one end of a first cable 1, a guide 6 for receiving the fibres of cable 1, and a coupling device 9 for receiving the fibres of cable 1 and also the fibres of the second cable (not shown). The device 9 and the guide 6 are provided with a suitable member of capillary guides for receiving individual fibres. The holder (not shown) for the first cable 1 is so located and a space is so provided between the holder and the guide 6 that when the fibres of the first cable are threaded into parts 6 and 9 bending of the fibres can be accommodated to thus assume that their inherent resilience is used in the abutment of fibre ends in the coupling device 9.
Patent GB-896591-A (GB)
Title: Improvements in or relating to cathode ray tubes and circuit arrangements embodying cathode ray tubes
Inventor: WOODBRIDGE LEONARD ALBERT
IPC: H01J29/48
Filed: 1957-08-23
Abstract: 896,591. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 22, 1958 [Aug. 23, 1957], No. 26606/57. Class 39(1). An electron gun for producing a flood of electrons, e.g. in a storage tube in which the usual gun is used for laying down the information and the flood gun is used for reading, or in a tube used for photographic printing in which the usual gun provides a light spot for use in the printing process while the flood gun is used to provide uniform illumination which is employed in setting up the apparatus, comprises a cathode 1, an apertured electrode 3 with an external surface convergent towards the aperture, and a further electrode 8, suitable potentials being applied so that an electrostatic field of large curvature is set up for diverging the electron beam. The convergent region of the electrode 3 is in the form of a truncated cone and the electrode 8 may be provided with a flange opposite the aperture 4 and may be split into two electrodes. The cathode may have a tapered end. Suitable dimensions, spacings and voltages are given.